Mercurial > hg > CbC > CbC_gcc
annotate gcc/sdbout.c @ 67:f6334be47118
update gcc from gcc-4.6-20100522 to gcc-4.6-20110318
| author | nobuyasu <dimolto@cr.ie.u-ryukyu.ac.jp> |
|---|---|
| date | Tue, 22 Mar 2011 17:18:12 +0900 |
| parents | b7f97abdc517 |
| children | 04ced10e8804 |
| rev | line source |
|---|---|
| 0 | 1 /* Output sdb-format symbol table information from GNU compiler. |
| 2 Copyright (C) 1988, 1992, 1993, 1994, 1995, 1996, 1997, 1998, 1999, | |
|
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parents:
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changeset
|
3 2000, 2001, 2002, 2003, 2004, 2005, 2007, 2008, 2009, 2010 |
| 0 | 4 Free Software Foundation, Inc. |
| 5 | |
| 6 This file is part of GCC. | |
| 7 | |
| 8 GCC is free software; you can redistribute it and/or modify it under | |
| 9 the terms of the GNU General Public License as published by the Free | |
| 10 Software Foundation; either version 3, or (at your option) any later | |
| 11 version. | |
| 12 | |
| 13 GCC is distributed in the hope that it will be useful, but WITHOUT ANY | |
| 14 WARRANTY; without even the implied warranty of MERCHANTABILITY or | |
| 15 FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License | |
| 16 for more details. | |
| 17 | |
| 18 You should have received a copy of the GNU General Public License | |
| 19 along with GCC; see the file COPYING3. If not see | |
| 20 <http://www.gnu.org/licenses/>. */ | |
| 21 | |
| 22 /* mike@tredysvr.Tredydev.Unisys.COM says: | |
| 23 I modified the struct.c example and have a nm of a .o resulting from the | |
| 24 AT&T C compiler. From the example below I would conclude the following: | |
| 25 | |
| 26 1. All .defs from structures are emitted as scanned. The example below | |
| 27 clearly shows the symbol table entries for BoxRec2 are after the first | |
| 28 function. | |
| 29 | |
| 30 2. All functions and their locals (including statics) are emitted as scanned. | |
| 31 | |
| 32 3. All nested unnamed union and structure .defs must be emitted before | |
| 33 the structure in which they are nested. The AT&T assembler is a | |
| 34 one pass beast as far as symbolics are concerned. | |
| 35 | |
| 36 4. All structure .defs are emitted before the typedefs that refer to them. | |
| 37 | |
| 38 5. All top level static and external variable definitions are moved to the | |
| 39 end of file with all top level statics occurring first before externs. | |
| 40 | |
| 41 6. All undefined references are at the end of the file. | |
| 42 */ | |
| 43 | |
| 44 #include "config.h" | |
| 45 #include "system.h" | |
| 46 #include "coretypes.h" | |
| 47 #include "tm.h" | |
| 48 #include "debug.h" | |
| 49 #include "tree.h" | |
| 50 #include "ggc.h" | |
|
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51 #include "vec.h" |
| 0 | 52 |
| 53 static GTY(()) tree anonymous_types; | |
| 54 | |
| 55 /* Counter to generate unique "names" for nameless struct members. */ | |
| 56 | |
| 57 static GTY(()) int unnamed_struct_number; | |
| 58 | |
| 59 /* Declarations whose debug info was deferred till end of compilation. */ | |
| 60 | |
|
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61 static GTY(()) VEC(tree,gc) *deferred_global_decls; |
| 0 | 62 |
| 63 /* The C front end may call sdbout_symbol before sdbout_init runs. | |
| 64 We save all such decls in this list and output them when we get | |
| 65 to sdbout_init. */ | |
| 66 | |
| 67 static GTY(()) tree preinit_symbols; | |
| 68 static GTY(()) bool sdbout_initialized; | |
| 69 | |
| 70 #ifdef SDB_DEBUGGING_INFO | |
| 71 | |
| 72 #include "rtl.h" | |
| 73 #include "regs.h" | |
| 74 #include "flags.h" | |
| 75 #include "insn-config.h" | |
| 76 #include "reload.h" | |
| 77 #include "output.h" | |
|
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parents:
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changeset
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78 #include "diagnostic-core.h" |
| 0 | 79 #include "tm_p.h" |
| 80 #include "gsyms.h" | |
| 81 #include "langhooks.h" | |
| 82 #include "target.h" | |
| 83 | |
| 84 /* 1 if PARM is passed to this function in memory. */ | |
| 85 | |
| 86 #define PARM_PASSED_IN_MEMORY(PARM) \ | |
| 87 (MEM_P (DECL_INCOMING_RTL (PARM))) | |
| 88 | |
| 89 /* A C expression for the integer offset value of an automatic variable | |
| 90 (C_AUTO) having address X (an RTX). */ | |
| 91 #ifndef DEBUGGER_AUTO_OFFSET | |
| 92 #define DEBUGGER_AUTO_OFFSET(X) \ | |
| 93 (GET_CODE (X) == PLUS ? INTVAL (XEXP (X, 1)) : 0) | |
| 94 #endif | |
| 95 | |
| 96 /* A C expression for the integer offset value of an argument (C_ARG) | |
| 97 having address X (an RTX). The nominal offset is OFFSET. */ | |
| 98 #ifndef DEBUGGER_ARG_OFFSET | |
| 99 #define DEBUGGER_ARG_OFFSET(OFFSET, X) (OFFSET) | |
| 100 #endif | |
| 101 | |
| 102 /* Line number of beginning of current function, minus one. | |
| 103 Negative means not in a function or not using sdb. */ | |
| 104 | |
| 105 int sdb_begin_function_line = -1; | |
| 106 | |
| 107 | |
| 108 extern FILE *asm_out_file; | |
| 109 | |
| 110 extern tree current_function_decl; | |
| 111 | |
| 112 #include "sdbout.h" | |
| 113 | |
| 114 static void sdbout_init (const char *); | |
| 115 static void sdbout_finish (const char *); | |
| 116 static void sdbout_start_source_file (unsigned int, const char *); | |
| 117 static void sdbout_end_source_file (unsigned int); | |
| 118 static void sdbout_begin_block (unsigned int, unsigned int); | |
| 119 static void sdbout_end_block (unsigned int, unsigned int); | |
|
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120 static void sdbout_source_line (unsigned int, const char *, int, bool); |
| 0 | 121 static void sdbout_end_epilogue (unsigned int, const char *); |
| 122 static void sdbout_global_decl (tree); | |
| 123 #ifndef MIPS_DEBUGGING_INFO | |
| 124 static void sdbout_begin_prologue (unsigned int, const char *); | |
| 125 #endif | |
| 126 static void sdbout_end_prologue (unsigned int, const char *); | |
| 127 static void sdbout_begin_function (tree); | |
| 128 static void sdbout_end_function (unsigned int); | |
| 129 static void sdbout_toplevel_data (tree); | |
| 130 static void sdbout_label (rtx); | |
| 131 static char *gen_fake_label (void); | |
| 132 static int plain_type (tree); | |
| 133 static int template_name_p (tree); | |
| 134 static void sdbout_record_type_name (tree); | |
| 135 static int plain_type_1 (tree, int); | |
| 136 static void sdbout_block (tree); | |
| 137 static void sdbout_syms (tree); | |
| 138 #ifdef SDB_ALLOW_FORWARD_REFERENCES | |
| 139 static void sdbout_queue_anonymous_type (tree); | |
| 140 static void sdbout_dequeue_anonymous_types (void); | |
| 141 #endif | |
| 142 static void sdbout_type (tree); | |
| 143 static void sdbout_field_types (tree); | |
| 144 static void sdbout_one_type (tree); | |
| 145 static void sdbout_parms (tree); | |
| 146 static void sdbout_reg_parms (tree); | |
| 147 static void sdbout_global_decl (tree); | |
| 148 | |
| 149 /* Random macros describing parts of SDB data. */ | |
| 150 | |
| 151 /* Default value of delimiter is ";". */ | |
| 152 #ifndef SDB_DELIM | |
| 153 #define SDB_DELIM ";" | |
| 154 #endif | |
| 155 | |
| 156 /* Maximum number of dimensions the assembler will allow. */ | |
| 157 #ifndef SDB_MAX_DIM | |
| 158 #define SDB_MAX_DIM 4 | |
| 159 #endif | |
| 160 | |
| 161 #ifndef PUT_SDB_SCL | |
| 162 #define PUT_SDB_SCL(a) fprintf(asm_out_file, "\t.scl\t%d%s", (a), SDB_DELIM) | |
| 163 #endif | |
| 164 | |
| 165 #ifndef PUT_SDB_INT_VAL | |
| 166 #define PUT_SDB_INT_VAL(a) \ | |
| 167 do { \ | |
| 168 fprintf (asm_out_file, "\t.val\t" HOST_WIDE_INT_PRINT_DEC "%s", \ | |
| 169 (HOST_WIDE_INT) (a), SDB_DELIM); \ | |
| 170 } while (0) | |
| 171 | |
| 172 #endif | |
| 173 | |
| 174 #ifndef PUT_SDB_VAL | |
| 175 #define PUT_SDB_VAL(a) \ | |
| 176 ( fputs ("\t.val\t", asm_out_file), \ | |
| 177 output_addr_const (asm_out_file, (a)), \ | |
| 178 fprintf (asm_out_file, SDB_DELIM)) | |
| 179 #endif | |
| 180 | |
| 181 #ifndef PUT_SDB_DEF | |
| 182 #define PUT_SDB_DEF(a) \ | |
| 183 do { fprintf (asm_out_file, "\t.def\t"); \ | |
| 184 assemble_name (asm_out_file, a); \ | |
| 185 fprintf (asm_out_file, SDB_DELIM); } while (0) | |
| 186 #endif | |
| 187 | |
| 188 #ifndef PUT_SDB_PLAIN_DEF | |
| 189 #define PUT_SDB_PLAIN_DEF(a) fprintf(asm_out_file,"\t.def\t.%s%s",a, SDB_DELIM) | |
| 190 #endif | |
| 191 | |
| 192 #ifndef PUT_SDB_ENDEF | |
| 193 #define PUT_SDB_ENDEF fputs("\t.endef\n", asm_out_file) | |
| 194 #endif | |
| 195 | |
| 196 #ifndef PUT_SDB_TYPE | |
| 197 #define PUT_SDB_TYPE(a) fprintf(asm_out_file, "\t.type\t0%o%s", a, SDB_DELIM) | |
| 198 #endif | |
| 199 | |
| 200 #ifndef PUT_SDB_SIZE | |
| 201 #define PUT_SDB_SIZE(a) \ | |
| 202 do { \ | |
| 203 fprintf (asm_out_file, "\t.size\t" HOST_WIDE_INT_PRINT_DEC "%s", \ | |
| 204 (HOST_WIDE_INT) (a), SDB_DELIM); \ | |
| 205 } while(0) | |
| 206 #endif | |
| 207 | |
| 208 #ifndef PUT_SDB_START_DIM | |
| 209 #define PUT_SDB_START_DIM fprintf(asm_out_file, "\t.dim\t") | |
| 210 #endif | |
| 211 | |
| 212 #ifndef PUT_SDB_NEXT_DIM | |
| 213 #define PUT_SDB_NEXT_DIM(a) fprintf(asm_out_file, "%d,", a) | |
| 214 #endif | |
| 215 | |
| 216 #ifndef PUT_SDB_LAST_DIM | |
| 217 #define PUT_SDB_LAST_DIM(a) fprintf(asm_out_file, "%d%s", a, SDB_DELIM) | |
| 218 #endif | |
| 219 | |
| 220 #ifndef PUT_SDB_TAG | |
| 221 #define PUT_SDB_TAG(a) \ | |
| 222 do { fprintf (asm_out_file, "\t.tag\t"); \ | |
| 223 assemble_name (asm_out_file, a); \ | |
| 224 fprintf (asm_out_file, SDB_DELIM); } while (0) | |
| 225 #endif | |
| 226 | |
| 227 #ifndef PUT_SDB_BLOCK_START | |
| 228 #define PUT_SDB_BLOCK_START(LINE) \ | |
| 229 fprintf (asm_out_file, \ | |
| 230 "\t.def\t.bb%s\t.val\t.%s\t.scl\t100%s\t.line\t%d%s\t.endef\n", \ | |
| 231 SDB_DELIM, SDB_DELIM, SDB_DELIM, (LINE), SDB_DELIM) | |
| 232 #endif | |
| 233 | |
| 234 #ifndef PUT_SDB_BLOCK_END | |
| 235 #define PUT_SDB_BLOCK_END(LINE) \ | |
| 236 fprintf (asm_out_file, \ | |
| 237 "\t.def\t.eb%s\t.val\t.%s\t.scl\t100%s\t.line\t%d%s\t.endef\n", \ | |
| 238 SDB_DELIM, SDB_DELIM, SDB_DELIM, (LINE), SDB_DELIM) | |
| 239 #endif | |
| 240 | |
| 241 #ifndef PUT_SDB_FUNCTION_START | |
| 242 #define PUT_SDB_FUNCTION_START(LINE) \ | |
| 243 fprintf (asm_out_file, \ | |
| 244 "\t.def\t.bf%s\t.val\t.%s\t.scl\t101%s\t.line\t%d%s\t.endef\n", \ | |
| 245 SDB_DELIM, SDB_DELIM, SDB_DELIM, (LINE), SDB_DELIM) | |
| 246 #endif | |
| 247 | |
| 248 #ifndef PUT_SDB_FUNCTION_END | |
| 249 #define PUT_SDB_FUNCTION_END(LINE) \ | |
| 250 fprintf (asm_out_file, \ | |
| 251 "\t.def\t.ef%s\t.val\t.%s\t.scl\t101%s\t.line\t%d%s\t.endef\n", \ | |
| 252 SDB_DELIM, SDB_DELIM, SDB_DELIM, (LINE), SDB_DELIM) | |
| 253 #endif | |
| 254 | |
| 255 /* Return the sdb tag identifier string for TYPE | |
| 256 if TYPE has already been defined; otherwise return a null pointer. */ | |
| 257 | |
| 258 #define KNOWN_TYPE_TAG(type) TYPE_SYMTAB_POINTER (type) | |
| 259 | |
| 260 /* Set the sdb tag identifier string for TYPE to NAME. */ | |
| 261 | |
| 262 #define SET_KNOWN_TYPE_TAG(TYPE, NAME) \ | |
| 263 TYPE_SYMTAB_POINTER (TYPE) = (const char *)(NAME) | |
| 264 | |
| 265 /* Return the name (a string) of the struct, union or enum tag | |
| 266 described by the TREE_LIST node LINK. This is 0 for an anonymous one. */ | |
| 267 | |
| 268 #define TAG_NAME(link) \ | |
| 269 (((link) && TREE_PURPOSE ((link)) \ | |
| 270 && IDENTIFIER_POINTER (TREE_PURPOSE ((link)))) \ | |
| 271 ? IDENTIFIER_POINTER (TREE_PURPOSE ((link))) : (char *) 0) | |
| 272 | |
| 273 /* Ensure we don't output a negative line number. */ | |
| 274 #define MAKE_LINE_SAFE(line) \ | |
| 275 if ((int) line <= sdb_begin_function_line) \ | |
| 276 line = sdb_begin_function_line + 1 | |
| 277 | |
| 278 /* Perform linker optimization of merging header file definitions together | |
| 279 for targets with MIPS_DEBUGGING_INFO defined. This won't work without a | |
| 280 post 960826 version of GAS. Nothing breaks with earlier versions of GAS, | |
| 281 the optimization just won't be done. The native assembler already has the | |
| 282 necessary support. */ | |
| 283 | |
| 284 #ifdef MIPS_DEBUGGING_INFO | |
| 285 | |
| 286 /* ECOFF linkers have an optimization that does the same kind of thing as | |
| 287 N_BINCL/E_INCL in stabs: eliminate duplicate debug information in the | |
| 288 executable. To achieve this, GCC must output a .file for each file | |
| 289 name change. */ | |
| 290 | |
| 291 /* This is a stack of input files. */ | |
| 292 | |
| 293 struct sdb_file | |
| 294 { | |
| 295 struct sdb_file *next; | |
| 296 const char *name; | |
| 297 }; | |
| 298 | |
| 299 /* This is the top of the stack. */ | |
| 300 | |
| 301 static struct sdb_file *current_file; | |
| 302 | |
| 303 #endif /* MIPS_DEBUGGING_INFO */ | |
| 304 | |
| 305 /* The debug hooks structure. */ | |
| 306 const struct gcc_debug_hooks sdb_debug_hooks = | |
| 307 { | |
| 308 sdbout_init, /* init */ | |
| 309 sdbout_finish, /* finish */ | |
| 36 | 310 debug_nothing_void, /* assembly_start */ |
| 0 | 311 debug_nothing_int_charstar, /* define */ |
| 312 debug_nothing_int_charstar, /* undef */ | |
| 313 sdbout_start_source_file, /* start_source_file */ | |
| 314 sdbout_end_source_file, /* end_source_file */ | |
| 315 sdbout_begin_block, /* begin_block */ | |
| 316 sdbout_end_block, /* end_block */ | |
| 317 debug_true_const_tree, /* ignore_block */ | |
| 318 sdbout_source_line, /* source_line */ | |
| 319 #ifdef MIPS_DEBUGGING_INFO | |
| 320 /* Defer on MIPS systems so that parameter descriptions follow | |
| 321 function entry. */ | |
| 322 debug_nothing_int_charstar, /* begin_prologue */ | |
| 323 sdbout_end_prologue, /* end_prologue */ | |
| 324 #else | |
| 325 sdbout_begin_prologue, /* begin_prologue */ | |
| 326 debug_nothing_int_charstar, /* end_prologue */ | |
| 327 #endif | |
|
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f6334be47118
update gcc from gcc-4.6-20100522 to gcc-4.6-20110318
nobuyasu <dimolto@cr.ie.u-ryukyu.ac.jp>
parents:
63
diff
changeset
|
328 debug_nothing_int_charstar, /* begin_epilogue */ |
| 0 | 329 sdbout_end_epilogue, /* end_epilogue */ |
| 330 sdbout_begin_function, /* begin_function */ | |
| 331 sdbout_end_function, /* end_function */ | |
| 332 debug_nothing_tree, /* function_decl */ | |
| 333 sdbout_global_decl, /* global_decl */ | |
| 334 sdbout_symbol, /* type_decl */ | |
| 335 debug_nothing_tree_tree_tree_bool, /* imported_module_or_decl */ | |
| 336 debug_nothing_tree, /* deferred_inline_function */ | |
| 337 debug_nothing_tree, /* outlining_inline_function */ | |
| 338 sdbout_label, /* label */ | |
| 339 debug_nothing_int, /* handle_pch */ | |
| 340 debug_nothing_rtx, /* var_location */ | |
| 341 debug_nothing_void, /* switch_text_section */ | |
|
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342 debug_nothing_tree, /* direct_call */ |
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parents:
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343 debug_nothing_tree_int, /* virtual_call_token */ |
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344 debug_nothing_rtx_rtx, /* copy_call_info */ |
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345 debug_nothing_uid, /* virtual_call */ |
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346 debug_nothing_tree_tree, /* set_name */ |
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f6334be47118
update gcc from gcc-4.6-20100522 to gcc-4.6-20110318
nobuyasu <dimolto@cr.ie.u-ryukyu.ac.jp>
parents:
63
diff
changeset
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347 0, /* start_end_main_source_file */ |
|
f6334be47118
update gcc from gcc-4.6-20100522 to gcc-4.6-20110318
nobuyasu <dimolto@cr.ie.u-ryukyu.ac.jp>
parents:
63
diff
changeset
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348 TYPE_SYMTAB_IS_POINTER /* tree_type_symtab_field */ |
| 0 | 349 }; |
| 350 | |
| 351 /* Return a unique string to name an anonymous type. */ | |
| 352 | |
| 353 static char * | |
| 354 gen_fake_label (void) | |
| 355 { | |
| 356 char label[10]; | |
| 357 char *labelstr; | |
| 358 sprintf (label, ".%dfake", unnamed_struct_number); | |
| 359 unnamed_struct_number++; | |
| 360 labelstr = xstrdup (label); | |
| 361 return labelstr; | |
| 362 } | |
| 363 | |
| 364 /* Return the number which describes TYPE for SDB. | |
| 365 For pointers, etc., this function is recursive. | |
| 366 Each record, union or enumeral type must already have had a | |
| 367 tag number output. */ | |
| 368 | |
| 369 /* The number is given by d6d5d4d3d2d1bbbb | |
| 370 where bbbb is 4 bit basic type, and di indicate one of notype,ptr,fn,array. | |
| 371 Thus, char *foo () has bbbb=T_CHAR | |
| 372 d1=D_FCN | |
| 373 d2=D_PTR | |
| 374 N_BTMASK= 017 1111 basic type field. | |
| 375 N_TSHIFT= 2 derived type shift | |
| 376 N_BTSHFT= 4 Basic type shift */ | |
| 377 | |
| 378 /* Produce the number that describes a pointer, function or array type. | |
| 379 PREV is the number describing the target, value or element type. | |
| 380 DT_type describes how to transform that type. */ | |
| 381 #define PUSH_DERIVED_LEVEL(DT_type,PREV) \ | |
| 382 ((((PREV) & ~(int) N_BTMASK) << (int) N_TSHIFT) \ | |
| 383 | ((int) DT_type << (int) N_BTSHFT) \ | |
| 384 | ((PREV) & (int) N_BTMASK)) | |
| 385 | |
| 386 /* Number of elements used in sdb_dims. */ | |
| 387 static int sdb_n_dims = 0; | |
| 388 | |
| 389 /* Table of array dimensions of current type. */ | |
| 390 static int sdb_dims[SDB_MAX_DIM]; | |
| 391 | |
| 392 /* Size of outermost array currently being processed. */ | |
| 393 static int sdb_type_size = -1; | |
| 394 | |
| 395 static int | |
| 396 plain_type (tree type) | |
| 397 { | |
| 398 int val = plain_type_1 (type, 0); | |
| 399 | |
| 400 /* If we have already saved up some array dimensions, print them now. */ | |
| 401 if (sdb_n_dims > 0) | |
| 402 { | |
| 403 int i; | |
| 404 PUT_SDB_START_DIM; | |
| 405 for (i = sdb_n_dims - 1; i > 0; i--) | |
| 406 PUT_SDB_NEXT_DIM (sdb_dims[i]); | |
| 407 PUT_SDB_LAST_DIM (sdb_dims[0]); | |
| 408 sdb_n_dims = 0; | |
| 409 | |
| 410 sdb_type_size = int_size_in_bytes (type); | |
| 411 /* Don't kill sdb if type is not laid out or has variable size. */ | |
| 412 if (sdb_type_size < 0) | |
| 413 sdb_type_size = 0; | |
| 414 } | |
| 415 /* If we have computed the size of an array containing this type, | |
| 416 print it now. */ | |
| 417 if (sdb_type_size >= 0) | |
| 418 { | |
| 419 PUT_SDB_SIZE (sdb_type_size); | |
| 420 sdb_type_size = -1; | |
| 421 } | |
| 422 return val; | |
| 423 } | |
| 424 | |
| 425 static int | |
| 426 template_name_p (tree name) | |
| 427 { | |
| 428 const char *ptr = IDENTIFIER_POINTER (name); | |
| 429 while (*ptr && *ptr != '<') | |
| 430 ptr++; | |
| 431 | |
| 432 return *ptr != '\0'; | |
| 433 } | |
| 434 | |
| 435 static void | |
| 436 sdbout_record_type_name (tree type) | |
| 437 { | |
| 438 const char *name = 0; | |
| 439 int no_name; | |
| 440 | |
| 441 if (KNOWN_TYPE_TAG (type)) | |
| 442 return; | |
| 443 | |
| 444 if (TYPE_NAME (type) != 0) | |
| 445 { | |
| 446 tree t = 0; | |
| 447 | |
| 448 /* Find the IDENTIFIER_NODE for the type name. */ | |
| 449 if (TREE_CODE (TYPE_NAME (type)) == IDENTIFIER_NODE) | |
| 450 t = TYPE_NAME (type); | |
| 451 else if (TREE_CODE (TYPE_NAME (type)) == TYPE_DECL) | |
| 452 { | |
| 453 t = DECL_NAME (TYPE_NAME (type)); | |
| 454 /* The DECL_NAME for templates includes "<>", which breaks | |
| 455 most assemblers. Use its assembler name instead, which | |
| 456 has been mangled into being safe. */ | |
| 457 if (t && template_name_p (t)) | |
| 458 t = DECL_ASSEMBLER_NAME (TYPE_NAME (type)); | |
| 459 } | |
| 460 | |
| 461 /* Now get the name as a string, or invent one. */ | |
| 462 if (t != NULL_TREE) | |
| 463 name = IDENTIFIER_POINTER (t); | |
| 464 } | |
| 465 | |
| 466 no_name = (name == 0 || *name == 0); | |
| 467 if (no_name) | |
| 468 name = gen_fake_label (); | |
| 469 | |
| 470 SET_KNOWN_TYPE_TAG (type, name); | |
| 471 #ifdef SDB_ALLOW_FORWARD_REFERENCES | |
| 472 if (no_name) | |
| 473 sdbout_queue_anonymous_type (type); | |
| 474 #endif | |
| 475 } | |
| 476 | |
| 477 /* Return the .type value for type TYPE. | |
| 478 | |
| 479 LEVEL indicates how many levels deep we have recursed into the type. | |
| 480 The SDB debug format can only represent 6 derived levels of types. | |
| 481 After that, we must output inaccurate debug info. We deliberately | |
| 482 stop before the 7th level, so that ADA recursive types will not give an | |
| 483 infinite loop. */ | |
| 484 | |
| 485 static int | |
| 486 plain_type_1 (tree type, int level) | |
| 487 { | |
| 488 if (type == 0) | |
| 489 type = void_type_node; | |
| 490 else if (type == error_mark_node) | |
| 491 type = integer_type_node; | |
| 492 else | |
| 493 type = TYPE_MAIN_VARIANT (type); | |
| 494 | |
| 495 switch (TREE_CODE (type)) | |
| 496 { | |
| 497 case VOID_TYPE: | |
|
67
f6334be47118
update gcc from gcc-4.6-20100522 to gcc-4.6-20110318
nobuyasu <dimolto@cr.ie.u-ryukyu.ac.jp>
parents:
63
diff
changeset
|
498 case NULLPTR_TYPE: |
| 0 | 499 return T_VOID; |
| 500 case BOOLEAN_TYPE: | |
| 501 case INTEGER_TYPE: | |
| 502 { | |
| 503 int size = int_size_in_bytes (type) * BITS_PER_UNIT; | |
| 504 | |
| 505 /* Carefully distinguish all the standard types of C, | |
| 506 without messing up if the language is not C. | |
| 507 Note that we check only for the names that contain spaces; | |
| 508 other names might occur by coincidence in other languages. */ | |
| 509 if (TYPE_NAME (type) != 0 | |
| 510 && TREE_CODE (TYPE_NAME (type)) == TYPE_DECL | |
| 511 && DECL_NAME (TYPE_NAME (type)) != 0 | |
| 512 && TREE_CODE (DECL_NAME (TYPE_NAME (type))) == IDENTIFIER_NODE) | |
| 513 { | |
| 514 const char *const name | |
| 515 = IDENTIFIER_POINTER (DECL_NAME (TYPE_NAME (type))); | |
| 516 | |
| 517 if (!strcmp (name, "char")) | |
| 518 return T_CHAR; | |
| 519 if (!strcmp (name, "unsigned char")) | |
| 520 return T_UCHAR; | |
| 521 if (!strcmp (name, "signed char")) | |
| 522 return T_CHAR; | |
| 523 if (!strcmp (name, "int")) | |
| 524 return T_INT; | |
| 525 if (!strcmp (name, "unsigned int")) | |
| 526 return T_UINT; | |
| 527 if (!strcmp (name, "short int")) | |
| 528 return T_SHORT; | |
| 529 if (!strcmp (name, "short unsigned int")) | |
| 530 return T_USHORT; | |
| 531 if (!strcmp (name, "long int")) | |
| 532 return T_LONG; | |
| 533 if (!strcmp (name, "long unsigned int")) | |
| 534 return T_ULONG; | |
| 535 } | |
| 536 | |
| 537 if (size == INT_TYPE_SIZE) | |
| 538 return (TYPE_UNSIGNED (type) ? T_UINT : T_INT); | |
| 539 if (size == CHAR_TYPE_SIZE) | |
| 540 return (TYPE_UNSIGNED (type) ? T_UCHAR : T_CHAR); | |
| 541 if (size == SHORT_TYPE_SIZE) | |
| 542 return (TYPE_UNSIGNED (type) ? T_USHORT : T_SHORT); | |
| 543 if (size == LONG_TYPE_SIZE) | |
| 544 return (TYPE_UNSIGNED (type) ? T_ULONG : T_LONG); | |
| 545 if (size == LONG_LONG_TYPE_SIZE) /* better than nothing */ | |
| 546 return (TYPE_UNSIGNED (type) ? T_ULONG : T_LONG); | |
| 547 return 0; | |
| 548 } | |
| 549 | |
| 550 case REAL_TYPE: | |
| 551 { | |
| 552 int precision = TYPE_PRECISION (type); | |
| 553 if (precision == FLOAT_TYPE_SIZE) | |
| 554 return T_FLOAT; | |
| 555 if (precision == DOUBLE_TYPE_SIZE) | |
| 556 return T_DOUBLE; | |
| 557 #ifdef EXTENDED_SDB_BASIC_TYPES | |
| 558 if (precision == LONG_DOUBLE_TYPE_SIZE) | |
| 559 return T_LNGDBL; | |
| 560 #else | |
| 561 if (precision == LONG_DOUBLE_TYPE_SIZE) | |
| 562 return T_DOUBLE; /* better than nothing */ | |
| 563 #endif | |
| 564 return 0; | |
| 565 } | |
| 566 | |
| 567 case ARRAY_TYPE: | |
| 568 { | |
| 569 int m; | |
| 570 if (level >= 6) | |
| 571 return T_VOID; | |
| 572 else | |
| 573 m = plain_type_1 (TREE_TYPE (type), level+1); | |
| 574 if (sdb_n_dims < SDB_MAX_DIM) | |
| 575 sdb_dims[sdb_n_dims++] | |
| 576 = (TYPE_DOMAIN (type) | |
| 577 && TYPE_MIN_VALUE (TYPE_DOMAIN (type)) != 0 | |
| 578 && TYPE_MAX_VALUE (TYPE_DOMAIN (type)) != 0 | |
| 579 && host_integerp (TYPE_MAX_VALUE (TYPE_DOMAIN (type)), 0) | |
| 580 && host_integerp (TYPE_MIN_VALUE (TYPE_DOMAIN (type)), 0) | |
| 581 ? (tree_low_cst (TYPE_MAX_VALUE (TYPE_DOMAIN (type)), 0) | |
| 582 - tree_low_cst (TYPE_MIN_VALUE (TYPE_DOMAIN (type)), 0) + 1) | |
| 583 : 0); | |
| 584 | |
| 585 return PUSH_DERIVED_LEVEL (DT_ARY, m); | |
| 586 } | |
| 587 | |
| 588 case RECORD_TYPE: | |
| 589 case UNION_TYPE: | |
| 590 case QUAL_UNION_TYPE: | |
| 591 case ENUMERAL_TYPE: | |
| 592 { | |
| 593 const char *tag; | |
| 594 #ifdef SDB_ALLOW_FORWARD_REFERENCES | |
| 595 sdbout_record_type_name (type); | |
| 596 #endif | |
| 597 #ifndef SDB_ALLOW_UNKNOWN_REFERENCES | |
| 598 if ((TREE_ASM_WRITTEN (type) && KNOWN_TYPE_TAG (type) != 0) | |
| 599 #ifdef SDB_ALLOW_FORWARD_REFERENCES | |
| 600 || TYPE_MODE (type) != VOIDmode | |
| 601 #endif | |
| 602 ) | |
| 603 #endif | |
| 604 { | |
| 605 /* Output the referenced structure tag name | |
| 606 only if the .def has already been finished. | |
| 607 At least on 386, the Unix assembler | |
| 608 cannot handle forward references to tags. */ | |
| 609 /* But the 88100, it requires them, sigh... */ | |
| 610 /* And the MIPS requires unknown refs as well... */ | |
| 611 tag = KNOWN_TYPE_TAG (type); | |
| 612 PUT_SDB_TAG (tag); | |
| 613 /* These 3 lines used to follow the close brace. | |
| 614 However, a size of 0 without a tag implies a tag of 0, | |
| 615 so if we don't know a tag, we can't mention the size. */ | |
| 616 sdb_type_size = int_size_in_bytes (type); | |
| 617 if (sdb_type_size < 0) | |
| 618 sdb_type_size = 0; | |
| 619 } | |
| 620 return ((TREE_CODE (type) == RECORD_TYPE) ? T_STRUCT | |
| 621 : (TREE_CODE (type) == UNION_TYPE) ? T_UNION | |
| 622 : (TREE_CODE (type) == QUAL_UNION_TYPE) ? T_UNION | |
| 623 : T_ENUM); | |
| 624 } | |
| 625 case POINTER_TYPE: | |
| 626 case REFERENCE_TYPE: | |
| 627 { | |
| 628 int m; | |
| 629 if (level >= 6) | |
| 630 return T_VOID; | |
| 631 else | |
| 632 m = plain_type_1 (TREE_TYPE (type), level+1); | |
| 633 return PUSH_DERIVED_LEVEL (DT_PTR, m); | |
| 634 } | |
| 635 case FUNCTION_TYPE: | |
| 636 case METHOD_TYPE: | |
| 637 { | |
| 638 int m; | |
| 639 if (level >= 6) | |
| 640 return T_VOID; | |
| 641 else | |
| 642 m = plain_type_1 (TREE_TYPE (type), level+1); | |
| 643 return PUSH_DERIVED_LEVEL (DT_FCN, m); | |
| 644 } | |
| 645 default: | |
| 646 return 0; | |
| 647 } | |
| 648 } | |
| 649 | |
| 650 /* Output the symbols defined in block number DO_BLOCK. | |
| 651 | |
| 652 This function works by walking the tree structure of blocks, | |
| 653 counting blocks until it finds the desired block. */ | |
| 654 | |
| 655 static int do_block = 0; | |
| 656 | |
| 657 static void | |
| 658 sdbout_block (tree block) | |
| 659 { | |
| 660 while (block) | |
| 661 { | |
| 662 /* Ignore blocks never expanded or otherwise marked as real. */ | |
| 663 if (TREE_USED (block)) | |
| 664 { | |
| 665 /* When we reach the specified block, output its symbols. */ | |
| 666 if (BLOCK_NUMBER (block) == do_block) | |
| 667 sdbout_syms (BLOCK_VARS (block)); | |
| 668 | |
| 669 /* If we are past the specified block, stop the scan. */ | |
| 670 if (BLOCK_NUMBER (block) > do_block) | |
| 671 return; | |
| 672 | |
| 673 /* Scan the blocks within this block. */ | |
| 674 sdbout_block (BLOCK_SUBBLOCKS (block)); | |
| 675 } | |
| 676 | |
| 677 block = BLOCK_CHAIN (block); | |
| 678 } | |
| 679 } | |
| 680 | |
| 681 /* Call sdbout_symbol on each decl in the chain SYMS. */ | |
| 682 | |
| 683 static void | |
| 684 sdbout_syms (tree syms) | |
| 685 { | |
| 686 while (syms) | |
| 687 { | |
| 688 if (TREE_CODE (syms) != LABEL_DECL) | |
| 689 sdbout_symbol (syms, 1); | |
| 690 syms = TREE_CHAIN (syms); | |
| 691 } | |
| 692 } | |
| 693 | |
| 694 /* Output SDB information for a symbol described by DECL. | |
| 695 LOCAL is nonzero if the symbol is not file-scope. */ | |
| 696 | |
| 697 void | |
| 698 sdbout_symbol (tree decl, int local) | |
| 699 { | |
| 700 tree type = TREE_TYPE (decl); | |
| 701 tree context = NULL_TREE; | |
| 702 rtx value; | |
| 703 int regno = -1; | |
| 704 const char *name; | |
| 705 | |
| 706 /* If we are called before sdbout_init is run, just save the symbol | |
| 707 for later. */ | |
| 708 if (!sdbout_initialized) | |
| 709 { | |
| 710 preinit_symbols = tree_cons (0, decl, preinit_symbols); | |
| 711 return; | |
| 712 } | |
| 713 | |
| 714 sdbout_one_type (type); | |
| 715 | |
| 716 switch (TREE_CODE (decl)) | |
| 717 { | |
| 718 case CONST_DECL: | |
| 719 /* Enum values are defined by defining the enum type. */ | |
| 720 return; | |
| 721 | |
| 722 case FUNCTION_DECL: | |
| 723 /* Don't mention a nested function under its parent. */ | |
| 724 context = decl_function_context (decl); | |
| 725 if (context == current_function_decl) | |
| 726 return; | |
| 727 /* Check DECL_INITIAL to distinguish declarations from definitions. | |
| 728 Don't output debug info here for declarations; they will have | |
| 729 a DECL_INITIAL value of 0. */ | |
| 730 if (! DECL_INITIAL (decl)) | |
| 731 return; | |
| 732 if (!MEM_P (DECL_RTL (decl)) | |
| 733 || GET_CODE (XEXP (DECL_RTL (decl), 0)) != SYMBOL_REF) | |
| 734 return; | |
| 735 PUT_SDB_DEF (IDENTIFIER_POINTER (DECL_ASSEMBLER_NAME (decl))); | |
| 736 PUT_SDB_VAL (XEXP (DECL_RTL (decl), 0)); | |
| 737 PUT_SDB_SCL (TREE_PUBLIC (decl) ? C_EXT : C_STAT); | |
| 738 break; | |
| 739 | |
| 740 case TYPE_DECL: | |
| 741 /* Done with tagged types. */ | |
| 742 if (DECL_NAME (decl) == 0) | |
| 743 return; | |
| 744 if (DECL_IGNORED_P (decl)) | |
| 745 return; | |
| 746 /* Don't output intrinsic types. GAS chokes on SDB .def | |
| 747 statements that contain identifiers with embedded spaces | |
| 748 (eg "unsigned long"). */ | |
| 749 if (DECL_IS_BUILTIN (decl)) | |
| 750 return; | |
| 751 | |
| 752 /* Output typedef name. */ | |
| 753 if (template_name_p (DECL_NAME (decl))) | |
| 754 PUT_SDB_DEF (IDENTIFIER_POINTER (DECL_ASSEMBLER_NAME (decl))); | |
| 755 else | |
| 756 PUT_SDB_DEF (IDENTIFIER_POINTER (DECL_NAME (decl))); | |
| 757 PUT_SDB_SCL (C_TPDEF); | |
| 758 break; | |
| 759 | |
| 760 case PARM_DECL: | |
| 761 /* Parm decls go in their own separate chains | |
| 762 and are output by sdbout_reg_parms and sdbout_parms. */ | |
| 763 gcc_unreachable (); | |
| 764 | |
| 765 case VAR_DECL: | |
| 766 /* Don't mention a variable that is external. | |
| 767 Let the file that defines it describe it. */ | |
| 768 if (DECL_EXTERNAL (decl)) | |
| 769 return; | |
| 770 | |
| 771 /* Ignore __FUNCTION__, etc. */ | |
| 772 if (DECL_IGNORED_P (decl)) | |
| 773 return; | |
| 774 | |
| 775 /* If there was an error in the declaration, don't dump core | |
| 776 if there is no RTL associated with the variable doesn't | |
| 777 exist. */ | |
| 778 if (!DECL_RTL_SET_P (decl)) | |
| 779 return; | |
| 780 | |
| 781 SET_DECL_RTL (decl, | |
|
55
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
36
diff
changeset
|
782 eliminate_regs (DECL_RTL (decl), VOIDmode, NULL_RTX)); |
| 0 | 783 #ifdef LEAF_REG_REMAP |
| 784 if (current_function_uses_only_leaf_regs) | |
| 785 leaf_renumber_regs_insn (DECL_RTL (decl)); | |
| 786 #endif | |
| 787 value = DECL_RTL (decl); | |
| 788 | |
| 789 /* Don't mention a variable at all | |
| 790 if it was completely optimized into nothingness. | |
| 791 | |
| 792 If DECL was from an inline function, then its rtl | |
| 793 is not identically the rtl that was used in this | |
| 794 particular compilation. */ | |
| 795 if (REG_P (value)) | |
| 796 { | |
| 797 regno = REGNO (value); | |
| 798 if (regno >= FIRST_PSEUDO_REGISTER) | |
| 799 return; | |
| 800 } | |
| 801 else if (GET_CODE (value) == SUBREG) | |
| 802 { | |
| 803 while (GET_CODE (value) == SUBREG) | |
| 804 value = SUBREG_REG (value); | |
| 805 if (REG_P (value)) | |
| 806 { | |
| 807 if (REGNO (value) >= FIRST_PSEUDO_REGISTER) | |
| 808 return; | |
| 809 } | |
| 810 regno = REGNO (alter_subreg (&value)); | |
| 811 SET_DECL_RTL (decl, value); | |
| 812 } | |
| 813 /* Don't output anything if an auto variable | |
| 814 gets RTL that is static. | |
| 815 GAS version 2.2 can't handle such output. */ | |
| 816 else if (MEM_P (value) && CONSTANT_P (XEXP (value, 0)) | |
| 817 && ! TREE_STATIC (decl)) | |
| 818 return; | |
| 819 | |
| 820 /* Emit any structure, union, or enum type that has not been output. | |
| 821 This occurs for tag-less structs (et al) used to declare variables | |
| 822 within functions. */ | |
| 823 if (TREE_CODE (type) == ENUMERAL_TYPE | |
| 824 || TREE_CODE (type) == RECORD_TYPE | |
| 825 || TREE_CODE (type) == UNION_TYPE | |
| 826 || TREE_CODE (type) == QUAL_UNION_TYPE) | |
| 827 { | |
| 828 if (COMPLETE_TYPE_P (type) /* not a forward reference */ | |
| 829 && KNOWN_TYPE_TAG (type) == 0) /* not yet declared */ | |
| 830 sdbout_one_type (type); | |
| 831 } | |
| 832 | |
| 833 /* Defer SDB information for top-level initialized variables! */ | |
| 834 if (! local | |
| 835 && MEM_P (value) | |
| 836 && DECL_INITIAL (decl)) | |
| 837 return; | |
| 838 | |
| 839 /* C++ in 2.3 makes nameless symbols. That will be fixed later. | |
| 840 For now, avoid crashing. */ | |
| 841 if (DECL_NAME (decl) == NULL_TREE) | |
| 842 return; | |
| 843 | |
| 844 /* Record the name for, starting a symtab entry. */ | |
| 845 if (local) | |
| 846 name = IDENTIFIER_POINTER (DECL_NAME (decl)); | |
| 847 else | |
| 848 name = IDENTIFIER_POINTER (DECL_ASSEMBLER_NAME (decl)); | |
| 849 | |
| 850 if (MEM_P (value) | |
| 851 && GET_CODE (XEXP (value, 0)) == SYMBOL_REF) | |
| 852 { | |
| 853 PUT_SDB_DEF (name); | |
| 854 if (TREE_PUBLIC (decl)) | |
| 855 { | |
| 856 PUT_SDB_VAL (XEXP (value, 0)); | |
| 857 PUT_SDB_SCL (C_EXT); | |
| 858 } | |
| 859 else | |
| 860 { | |
| 861 PUT_SDB_VAL (XEXP (value, 0)); | |
| 862 PUT_SDB_SCL (C_STAT); | |
| 863 } | |
| 864 } | |
| 865 else if (regno >= 0) | |
| 866 { | |
| 867 PUT_SDB_DEF (name); | |
| 868 PUT_SDB_INT_VAL (DBX_REGISTER_NUMBER (regno)); | |
| 869 PUT_SDB_SCL (C_REG); | |
| 870 } | |
| 871 else if (MEM_P (value) | |
| 872 && (MEM_P (XEXP (value, 0)) | |
| 873 || (REG_P (XEXP (value, 0)) | |
| 874 && REGNO (XEXP (value, 0)) != HARD_FRAME_POINTER_REGNUM | |
| 875 && REGNO (XEXP (value, 0)) != STACK_POINTER_REGNUM))) | |
| 876 /* If the value is indirect by memory or by a register | |
| 877 that isn't the frame pointer | |
| 878 then it means the object is variable-sized and address through | |
| 879 that register or stack slot. COFF has no way to represent this | |
| 880 so all we can do is output the variable as a pointer. */ | |
| 881 { | |
| 882 PUT_SDB_DEF (name); | |
| 883 if (REG_P (XEXP (value, 0))) | |
| 884 { | |
| 885 PUT_SDB_INT_VAL (DBX_REGISTER_NUMBER (REGNO (XEXP (value, 0)))); | |
| 886 PUT_SDB_SCL (C_REG); | |
| 887 } | |
| 888 else | |
| 889 { | |
| 890 /* DECL_RTL looks like (MEM (MEM (PLUS (REG...) | |
| 891 (CONST_INT...)))). | |
| 892 We want the value of that CONST_INT. */ | |
| 893 /* Encore compiler hates a newline in a macro arg, it seems. */ | |
| 894 PUT_SDB_INT_VAL (DEBUGGER_AUTO_OFFSET | |
| 895 (XEXP (XEXP (value, 0), 0))); | |
| 896 PUT_SDB_SCL (C_AUTO); | |
| 897 } | |
| 898 | |
| 899 /* Effectively do build_pointer_type, but don't cache this type, | |
| 900 since it might be temporary whereas the type it points to | |
| 901 might have been saved for inlining. */ | |
| 902 /* Don't use REFERENCE_TYPE because dbx can't handle that. */ | |
| 903 type = make_node (POINTER_TYPE); | |
| 904 TREE_TYPE (type) = TREE_TYPE (decl); | |
| 905 } | |
| 906 else if (MEM_P (value) | |
| 907 && ((GET_CODE (XEXP (value, 0)) == PLUS | |
| 908 && REG_P (XEXP (XEXP (value, 0), 0)) | |
|
55
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
36
diff
changeset
|
909 && CONST_INT_P (XEXP (XEXP (value, 0), 1))) |
| 0 | 910 /* This is for variables which are at offset zero from |
| 911 the frame pointer. This happens on the Alpha. | |
| 912 Non-frame pointer registers are excluded above. */ | |
| 913 || (REG_P (XEXP (value, 0))))) | |
| 914 { | |
| 915 /* DECL_RTL looks like (MEM (PLUS (REG...) (CONST_INT...))) | |
| 916 or (MEM (REG...)). We want the value of that CONST_INT | |
| 917 or zero. */ | |
| 918 PUT_SDB_DEF (name); | |
| 919 PUT_SDB_INT_VAL (DEBUGGER_AUTO_OFFSET (XEXP (value, 0))); | |
| 920 PUT_SDB_SCL (C_AUTO); | |
| 921 } | |
| 922 else | |
| 923 { | |
| 924 /* It is something we don't know how to represent for SDB. */ | |
| 925 return; | |
| 926 } | |
| 927 break; | |
| 928 | |
| 929 default: | |
| 930 break; | |
| 931 } | |
| 932 PUT_SDB_TYPE (plain_type (type)); | |
| 933 PUT_SDB_ENDEF; | |
| 934 } | |
| 935 | |
| 936 /* Output SDB information for a top-level initialized variable | |
| 937 that has been delayed. */ | |
| 938 | |
| 939 static void | |
| 940 sdbout_toplevel_data (tree decl) | |
| 941 { | |
| 942 tree type = TREE_TYPE (decl); | |
| 943 | |
| 944 if (DECL_IGNORED_P (decl)) | |
| 945 return; | |
| 946 | |
| 947 gcc_assert (TREE_CODE (decl) == VAR_DECL); | |
| 948 gcc_assert (MEM_P (DECL_RTL (decl))); | |
| 949 gcc_assert (DECL_INITIAL (decl)); | |
| 950 | |
| 951 PUT_SDB_DEF (IDENTIFIER_POINTER (DECL_ASSEMBLER_NAME (decl))); | |
| 952 PUT_SDB_VAL (XEXP (DECL_RTL (decl), 0)); | |
| 953 if (TREE_PUBLIC (decl)) | |
| 954 { | |
| 955 PUT_SDB_SCL (C_EXT); | |
| 956 } | |
| 957 else | |
| 958 { | |
| 959 PUT_SDB_SCL (C_STAT); | |
| 960 } | |
| 961 PUT_SDB_TYPE (plain_type (type)); | |
| 962 PUT_SDB_ENDEF; | |
| 963 } | |
| 964 | |
| 965 #ifdef SDB_ALLOW_FORWARD_REFERENCES | |
| 966 | |
| 967 /* Machinery to record and output anonymous types. */ | |
| 968 | |
| 969 static void | |
| 970 sdbout_queue_anonymous_type (tree type) | |
| 971 { | |
| 972 anonymous_types = tree_cons (NULL_TREE, type, anonymous_types); | |
| 973 } | |
| 974 | |
| 975 static void | |
| 976 sdbout_dequeue_anonymous_types (void) | |
| 977 { | |
| 978 tree types, link; | |
| 979 | |
| 980 while (anonymous_types) | |
| 981 { | |
| 982 types = nreverse (anonymous_types); | |
| 983 anonymous_types = NULL_TREE; | |
| 984 | |
| 985 for (link = types; link; link = TREE_CHAIN (link)) | |
| 986 { | |
| 987 tree type = TREE_VALUE (link); | |
| 988 | |
| 989 if (type && ! TREE_ASM_WRITTEN (type)) | |
| 990 sdbout_one_type (type); | |
| 991 } | |
| 992 } | |
| 993 } | |
| 994 | |
| 995 #endif | |
| 996 | |
| 997 /* Given a chain of ..._TYPE nodes, all of which have names, | |
| 998 output definitions of those names, as typedefs. */ | |
| 999 | |
| 1000 void | |
| 1001 sdbout_types (tree types) | |
| 1002 { | |
| 1003 tree link; | |
| 1004 | |
| 1005 for (link = types; link; link = TREE_CHAIN (link)) | |
| 1006 sdbout_one_type (link); | |
| 1007 | |
| 1008 #ifdef SDB_ALLOW_FORWARD_REFERENCES | |
| 1009 sdbout_dequeue_anonymous_types (); | |
| 1010 #endif | |
| 1011 } | |
| 1012 | |
| 1013 static void | |
| 1014 sdbout_type (tree type) | |
| 1015 { | |
| 1016 if (type == error_mark_node) | |
| 1017 type = integer_type_node; | |
| 1018 PUT_SDB_TYPE (plain_type (type)); | |
| 1019 } | |
| 1020 | |
| 1021 /* Output types of the fields of type TYPE, if they are structs. | |
| 1022 | |
| 1023 Formerly did not chase through pointer types, since that could be circular. | |
| 1024 They must come before TYPE, since forward refs are not allowed. | |
| 1025 Now james@bigtex.cactus.org says to try them. */ | |
| 1026 | |
| 1027 static void | |
| 1028 sdbout_field_types (tree type) | |
| 1029 { | |
| 1030 tree tail; | |
| 1031 | |
| 1032 for (tail = TYPE_FIELDS (type); tail; tail = TREE_CHAIN (tail)) | |
| 1033 /* This condition should match the one for emitting the actual | |
| 1034 members below. */ | |
| 1035 if (TREE_CODE (tail) == FIELD_DECL | |
| 1036 && DECL_NAME (tail) | |
| 1037 && DECL_SIZE (tail) | |
| 1038 && host_integerp (DECL_SIZE (tail), 1) | |
| 1039 && host_integerp (bit_position (tail), 0)) | |
| 1040 { | |
| 1041 if (POINTER_TYPE_P (TREE_TYPE (tail))) | |
| 1042 sdbout_one_type (TREE_TYPE (TREE_TYPE (tail))); | |
| 1043 else | |
| 1044 sdbout_one_type (TREE_TYPE (tail)); | |
| 1045 } | |
| 1046 } | |
| 1047 | |
| 1048 /* Use this to put out the top level defined record and union types | |
| 1049 for later reference. If this is a struct with a name, then put that | |
| 1050 name out. Other unnamed structs will have .xxfake labels generated so | |
| 1051 that they may be referred to later. | |
| 1052 The label will be stored in the KNOWN_TYPE_TAG slot of a type. | |
| 1053 It may NOT be called recursively. */ | |
| 1054 | |
| 1055 static void | |
| 1056 sdbout_one_type (tree type) | |
| 1057 { | |
| 1058 if (current_function_decl != NULL_TREE | |
| 1059 && DECL_SECTION_NAME (current_function_decl) != NULL_TREE) | |
| 1060 ; /* Don't change section amid function. */ | |
| 1061 else | |
| 1062 switch_to_section (text_section); | |
| 1063 | |
| 1064 switch (TREE_CODE (type)) | |
| 1065 { | |
| 1066 case RECORD_TYPE: | |
| 1067 case UNION_TYPE: | |
| 1068 case QUAL_UNION_TYPE: | |
| 1069 case ENUMERAL_TYPE: | |
| 1070 type = TYPE_MAIN_VARIANT (type); | |
| 1071 /* Don't output a type twice. */ | |
| 1072 if (TREE_ASM_WRITTEN (type)) | |
| 1073 /* James said test TREE_ASM_BEING_WRITTEN here. */ | |
| 1074 return; | |
| 1075 | |
| 1076 /* Output nothing if type is not yet defined. */ | |
| 1077 if (!COMPLETE_TYPE_P (type)) | |
| 1078 return; | |
| 1079 | |
| 1080 TREE_ASM_WRITTEN (type) = 1; | |
| 1081 | |
| 1082 /* This is reputed to cause trouble with the following case, | |
| 1083 but perhaps checking TYPE_SIZE above will fix it. */ | |
| 1084 | |
| 1085 /* Here is a testcase: | |
| 1086 | |
| 1087 struct foo { | |
| 1088 struct badstr *bbb; | |
| 1089 } forwardref; | |
| 1090 | |
| 1091 typedef struct intermediate { | |
| 1092 int aaaa; | |
| 1093 } intermediate_ref; | |
| 1094 | |
| 1095 typedef struct badstr { | |
| 1096 int ccccc; | |
| 1097 } badtype; */ | |
| 1098 | |
| 1099 /* This change, which ought to make better output, | |
| 1100 used to make the COFF assembler unhappy. | |
| 1101 Changes involving KNOWN_TYPE_TAG may fix the problem. */ | |
| 1102 /* Before really doing anything, output types we want to refer to. */ | |
| 1103 /* Note that in version 1 the following two lines | |
| 1104 are not used if forward references are in use. */ | |
| 1105 if (TREE_CODE (type) != ENUMERAL_TYPE) | |
| 1106 sdbout_field_types (type); | |
| 1107 | |
| 1108 /* Output a structure type. */ | |
| 1109 { | |
| 1110 int size = int_size_in_bytes (type); | |
| 1111 int member_scl = 0; | |
| 1112 tree tem; | |
| 1113 | |
| 1114 /* Record the type tag, but not in its permanent place just yet. */ | |
| 1115 sdbout_record_type_name (type); | |
| 1116 | |
| 1117 PUT_SDB_DEF (KNOWN_TYPE_TAG (type)); | |
| 1118 | |
| 1119 switch (TREE_CODE (type)) | |
| 1120 { | |
| 1121 case UNION_TYPE: | |
| 1122 case QUAL_UNION_TYPE: | |
| 1123 PUT_SDB_SCL (C_UNTAG); | |
| 1124 PUT_SDB_TYPE (T_UNION); | |
| 1125 member_scl = C_MOU; | |
| 1126 break; | |
| 1127 | |
| 1128 case RECORD_TYPE: | |
| 1129 PUT_SDB_SCL (C_STRTAG); | |
| 1130 PUT_SDB_TYPE (T_STRUCT); | |
| 1131 member_scl = C_MOS; | |
| 1132 break; | |
| 1133 | |
| 1134 case ENUMERAL_TYPE: | |
| 1135 PUT_SDB_SCL (C_ENTAG); | |
| 1136 PUT_SDB_TYPE (T_ENUM); | |
| 1137 member_scl = C_MOE; | |
| 1138 break; | |
| 1139 | |
| 1140 default: | |
| 1141 break; | |
| 1142 } | |
| 1143 | |
| 1144 PUT_SDB_SIZE (size); | |
| 1145 PUT_SDB_ENDEF; | |
| 1146 | |
| 1147 /* Print out the base class information with fields | |
| 1148 named after the types they hold. */ | |
| 1149 /* This is only relevant to aggregate types. TYPE_BINFO is used | |
| 1150 for other purposes in an ENUMERAL_TYPE, so we must exclude that | |
| 1151 case. */ | |
| 1152 if (TREE_CODE (type) != ENUMERAL_TYPE && TYPE_BINFO (type)) | |
| 1153 { | |
| 1154 int i; | |
| 1155 tree binfo, child; | |
| 1156 | |
| 1157 for (binfo = TYPE_BINFO (type), i = 0; | |
| 1158 BINFO_BASE_ITERATE (binfo, i, child); i++) | |
| 1159 { | |
| 1160 tree child_type = BINFO_TYPE (child); | |
| 1161 tree child_type_name; | |
|
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1162 |
| 0 | 1163 if (TYPE_NAME (child_type) == 0) |
| 1164 continue; | |
| 1165 if (TREE_CODE (TYPE_NAME (child_type)) == IDENTIFIER_NODE) | |
| 1166 child_type_name = TYPE_NAME (child_type); | |
| 1167 else if (TREE_CODE (TYPE_NAME (child_type)) == TYPE_DECL) | |
| 1168 { | |
| 1169 child_type_name = DECL_NAME (TYPE_NAME (child_type)); | |
| 1170 if (child_type_name && template_name_p (child_type_name)) | |
| 1171 child_type_name | |
| 1172 = DECL_ASSEMBLER_NAME (TYPE_NAME (child_type)); | |
| 1173 } | |
| 1174 else | |
| 1175 continue; | |
| 1176 | |
| 1177 PUT_SDB_DEF (IDENTIFIER_POINTER (child_type_name)); | |
| 1178 PUT_SDB_INT_VAL (tree_low_cst (BINFO_OFFSET (child), 0)); | |
| 1179 PUT_SDB_SCL (member_scl); | |
| 1180 sdbout_type (BINFO_TYPE (child)); | |
| 1181 PUT_SDB_ENDEF; | |
| 1182 } | |
| 1183 } | |
| 1184 | |
| 1185 /* Output the individual fields. */ | |
| 1186 | |
| 1187 if (TREE_CODE (type) == ENUMERAL_TYPE) | |
| 1188 { | |
| 1189 for (tem = TYPE_VALUES (type); tem; tem = TREE_CHAIN (tem)) | |
| 1190 { | |
| 1191 tree value = TREE_VALUE (tem); | |
| 1192 | |
| 1193 if (TREE_CODE (value) == CONST_DECL) | |
| 1194 value = DECL_INITIAL (value); | |
| 1195 | |
| 1196 if (host_integerp (value, 0)) | |
| 1197 { | |
| 1198 PUT_SDB_DEF (IDENTIFIER_POINTER (TREE_PURPOSE (tem))); | |
| 1199 PUT_SDB_INT_VAL (tree_low_cst (value, 0)); | |
| 1200 PUT_SDB_SCL (C_MOE); | |
| 1201 PUT_SDB_TYPE (T_MOE); | |
| 1202 PUT_SDB_ENDEF; | |
| 1203 } | |
| 1204 } | |
| 1205 } | |
| 1206 else /* record or union type */ | |
| 1207 for (tem = TYPE_FIELDS (type); tem; tem = TREE_CHAIN (tem)) | |
| 1208 /* Output the name, type, position (in bits), size (in bits) | |
| 1209 of each field. */ | |
| 1210 | |
| 1211 /* Omit here the nameless fields that are used to skip bits. | |
| 1212 Also omit fields with variable size or position. | |
| 1213 Also omit non FIELD_DECL nodes that GNU C++ may put here. */ | |
| 1214 if (TREE_CODE (tem) == FIELD_DECL | |
| 1215 && DECL_NAME (tem) | |
| 1216 && DECL_SIZE (tem) | |
| 1217 && host_integerp (DECL_SIZE (tem), 1) | |
| 1218 && host_integerp (bit_position (tem), 0)) | |
| 1219 { | |
| 1220 const char *name; | |
| 1221 | |
| 1222 name = IDENTIFIER_POINTER (DECL_NAME (tem)); | |
| 1223 PUT_SDB_DEF (name); | |
| 1224 if (DECL_BIT_FIELD_TYPE (tem)) | |
| 1225 { | |
| 1226 PUT_SDB_INT_VAL (int_bit_position (tem)); | |
| 1227 PUT_SDB_SCL (C_FIELD); | |
| 1228 sdbout_type (DECL_BIT_FIELD_TYPE (tem)); | |
| 1229 PUT_SDB_SIZE (tree_low_cst (DECL_SIZE (tem), 1)); | |
| 1230 } | |
| 1231 else | |
| 1232 { | |
| 1233 PUT_SDB_INT_VAL (int_bit_position (tem) / BITS_PER_UNIT); | |
| 1234 PUT_SDB_SCL (member_scl); | |
| 1235 sdbout_type (TREE_TYPE (tem)); | |
| 1236 } | |
| 1237 PUT_SDB_ENDEF; | |
| 1238 } | |
| 1239 /* Output end of a structure,union, or enumeral definition. */ | |
| 1240 | |
| 1241 PUT_SDB_PLAIN_DEF ("eos"); | |
| 1242 PUT_SDB_INT_VAL (size); | |
| 1243 PUT_SDB_SCL (C_EOS); | |
| 1244 PUT_SDB_TAG (KNOWN_TYPE_TAG (type)); | |
| 1245 PUT_SDB_SIZE (size); | |
| 1246 PUT_SDB_ENDEF; | |
| 1247 break; | |
|
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1248 } |
| 0 | 1249 |
|
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1250 default: |
|
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1251 break; |
| 0 | 1252 } |
| 1253 } | |
| 1254 | |
| 1255 /* The following two functions output definitions of function parameters. | |
| 1256 Each parameter gets a definition locating it in the parameter list. | |
| 1257 Each parameter that is a register variable gets a second definition | |
| 1258 locating it in the register. | |
| 1259 | |
| 1260 Printing or argument lists in gdb uses the definitions that | |
| 1261 locate in the parameter list. But reference to the variable in | |
| 1262 expressions uses preferentially the definition as a register. */ | |
| 1263 | |
| 1264 /* Output definitions, referring to storage in the parmlist, | |
| 1265 of all the parms in PARMS, which is a chain of PARM_DECL nodes. */ | |
| 1266 | |
| 1267 static void | |
| 1268 sdbout_parms (tree parms) | |
| 1269 { | |
| 1270 for (; parms; parms = TREE_CHAIN (parms)) | |
| 1271 if (DECL_NAME (parms)) | |
| 1272 { | |
| 1273 int current_sym_value = 0; | |
| 1274 const char *name = IDENTIFIER_POINTER (DECL_NAME (parms)); | |
| 1275 | |
| 1276 if (name == 0 || *name == 0) | |
| 1277 name = gen_fake_label (); | |
| 1278 | |
| 1279 /* Perform any necessary register eliminations on the parameter's rtl, | |
| 1280 so that the debugging output will be accurate. */ | |
| 1281 DECL_INCOMING_RTL (parms) | |
|
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1282 = eliminate_regs (DECL_INCOMING_RTL (parms), VOIDmode, NULL_RTX); |
| 0 | 1283 SET_DECL_RTL (parms, |
|
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1284 eliminate_regs (DECL_RTL (parms), VOIDmode, NULL_RTX)); |
| 0 | 1285 |
| 1286 if (PARM_PASSED_IN_MEMORY (parms)) | |
| 1287 { | |
| 1288 rtx addr = XEXP (DECL_INCOMING_RTL (parms), 0); | |
| 1289 tree type; | |
| 1290 | |
| 1291 /* ??? Here we assume that the parm address is indexed | |
| 1292 off the frame pointer or arg pointer. | |
| 1293 If that is not true, we produce meaningless results, | |
| 1294 but do not crash. */ | |
| 1295 if (GET_CODE (addr) == PLUS | |
|
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1296 && CONST_INT_P (XEXP (addr, 1))) |
| 0 | 1297 current_sym_value = INTVAL (XEXP (addr, 1)); |
| 1298 else | |
| 1299 current_sym_value = 0; | |
| 1300 | |
| 1301 if (REG_P (DECL_RTL (parms)) | |
| 1302 && REGNO (DECL_RTL (parms)) < FIRST_PSEUDO_REGISTER) | |
| 1303 type = DECL_ARG_TYPE (parms); | |
| 1304 else | |
| 1305 { | |
| 1306 int original_sym_value = current_sym_value; | |
| 1307 | |
| 1308 /* This is the case where the parm is passed as an int or | |
| 1309 double and it is converted to a char, short or float | |
| 1310 and stored back in the parmlist. In this case, describe | |
| 1311 the parm with the variable's declared type, and adjust | |
| 1312 the address if the least significant bytes (which we are | |
| 1313 using) are not the first ones. */ | |
| 1314 if (BYTES_BIG_ENDIAN | |
| 1315 && TREE_TYPE (parms) != DECL_ARG_TYPE (parms)) | |
| 1316 current_sym_value += | |
| 1317 (GET_MODE_SIZE (TYPE_MODE (DECL_ARG_TYPE (parms))) | |
| 1318 - GET_MODE_SIZE (GET_MODE (DECL_RTL (parms)))); | |
| 1319 | |
| 1320 if (MEM_P (DECL_RTL (parms)) | |
| 1321 && GET_CODE (XEXP (DECL_RTL (parms), 0)) == PLUS | |
| 1322 && (GET_CODE (XEXP (XEXP (DECL_RTL (parms), 0), 1)) | |
| 1323 == CONST_INT) | |
| 1324 && (INTVAL (XEXP (XEXP (DECL_RTL (parms), 0), 1)) | |
| 1325 == current_sym_value)) | |
| 1326 type = TREE_TYPE (parms); | |
| 1327 else | |
| 1328 { | |
| 1329 current_sym_value = original_sym_value; | |
| 1330 type = DECL_ARG_TYPE (parms); | |
| 1331 } | |
| 1332 } | |
| 1333 | |
| 1334 PUT_SDB_DEF (name); | |
| 1335 PUT_SDB_INT_VAL (DEBUGGER_ARG_OFFSET (current_sym_value, addr)); | |
| 1336 PUT_SDB_SCL (C_ARG); | |
| 1337 PUT_SDB_TYPE (plain_type (type)); | |
| 1338 PUT_SDB_ENDEF; | |
| 1339 } | |
| 1340 else if (REG_P (DECL_RTL (parms))) | |
| 1341 { | |
| 1342 rtx best_rtl; | |
| 1343 /* Parm passed in registers and lives in registers or nowhere. */ | |
| 1344 | |
| 1345 /* If parm lives in a register, use that register; | |
| 1346 pretend the parm was passed there. It would be more consistent | |
| 1347 to describe the register where the parm was passed, | |
| 1348 but in practice that register usually holds something else. */ | |
| 1349 if (REGNO (DECL_RTL (parms)) < FIRST_PSEUDO_REGISTER) | |
| 1350 best_rtl = DECL_RTL (parms); | |
| 1351 /* If the parm lives nowhere, | |
| 1352 use the register where it was passed. */ | |
| 1353 else | |
| 1354 best_rtl = DECL_INCOMING_RTL (parms); | |
| 1355 | |
| 1356 PUT_SDB_DEF (name); | |
| 1357 PUT_SDB_INT_VAL (DBX_REGISTER_NUMBER (REGNO (best_rtl))); | |
| 1358 PUT_SDB_SCL (C_REGPARM); | |
| 1359 PUT_SDB_TYPE (plain_type (TREE_TYPE (parms))); | |
| 1360 PUT_SDB_ENDEF; | |
| 1361 } | |
| 1362 else if (MEM_P (DECL_RTL (parms)) | |
| 1363 && XEXP (DECL_RTL (parms), 0) != const0_rtx) | |
| 1364 { | |
| 1365 /* Parm was passed in registers but lives on the stack. */ | |
| 1366 | |
| 1367 /* DECL_RTL looks like (MEM (PLUS (REG...) (CONST_INT...))), | |
| 1368 in which case we want the value of that CONST_INT, | |
| 1369 or (MEM (REG ...)) or (MEM (MEM ...)), | |
| 1370 in which case we use a value of zero. */ | |
| 1371 if (REG_P (XEXP (DECL_RTL (parms), 0)) | |
| 1372 || MEM_P (XEXP (DECL_RTL (parms), 0))) | |
| 1373 current_sym_value = 0; | |
| 1374 else | |
| 1375 current_sym_value = INTVAL (XEXP (XEXP (DECL_RTL (parms), 0), 1)); | |
| 1376 | |
| 1377 /* Again, this assumes the offset is based on the arg pointer. */ | |
| 1378 PUT_SDB_DEF (name); | |
| 1379 PUT_SDB_INT_VAL (DEBUGGER_ARG_OFFSET (current_sym_value, | |
| 1380 XEXP (DECL_RTL (parms), 0))); | |
| 1381 PUT_SDB_SCL (C_ARG); | |
| 1382 PUT_SDB_TYPE (plain_type (TREE_TYPE (parms))); | |
| 1383 PUT_SDB_ENDEF; | |
| 1384 } | |
| 1385 } | |
| 1386 } | |
| 1387 | |
| 1388 /* Output definitions for the places where parms live during the function, | |
| 1389 when different from where they were passed, when the parms were passed | |
| 1390 in memory. | |
| 1391 | |
| 1392 It is not useful to do this for parms passed in registers | |
| 1393 that live during the function in different registers, because it is | |
| 1394 impossible to look in the passed register for the passed value, | |
| 1395 so we use the within-the-function register to begin with. | |
| 1396 | |
| 1397 PARMS is a chain of PARM_DECL nodes. */ | |
| 1398 | |
| 1399 static void | |
| 1400 sdbout_reg_parms (tree parms) | |
| 1401 { | |
| 1402 for (; parms; parms = TREE_CHAIN (parms)) | |
| 1403 if (DECL_NAME (parms)) | |
| 1404 { | |
| 1405 const char *name = IDENTIFIER_POINTER (DECL_NAME (parms)); | |
| 1406 | |
| 1407 /* Report parms that live in registers during the function | |
| 1408 but were passed in memory. */ | |
| 1409 if (REG_P (DECL_RTL (parms)) | |
| 1410 && REGNO (DECL_RTL (parms)) < FIRST_PSEUDO_REGISTER | |
| 1411 && PARM_PASSED_IN_MEMORY (parms)) | |
| 1412 { | |
| 1413 if (name == 0 || *name == 0) | |
| 1414 name = gen_fake_label (); | |
| 1415 PUT_SDB_DEF (name); | |
| 1416 PUT_SDB_INT_VAL (DBX_REGISTER_NUMBER (REGNO (DECL_RTL (parms)))); | |
| 1417 PUT_SDB_SCL (C_REG); | |
| 1418 PUT_SDB_TYPE (plain_type (TREE_TYPE (parms))); | |
| 1419 PUT_SDB_ENDEF; | |
| 1420 } | |
| 1421 /* Report parms that live in memory but not where they were passed. */ | |
| 1422 else if (MEM_P (DECL_RTL (parms)) | |
| 1423 && GET_CODE (XEXP (DECL_RTL (parms), 0)) == PLUS | |
|
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1424 && CONST_INT_P (XEXP (XEXP (DECL_RTL (parms), 0), 1)) |
| 0 | 1425 && PARM_PASSED_IN_MEMORY (parms) |
| 1426 && ! rtx_equal_p (DECL_RTL (parms), DECL_INCOMING_RTL (parms))) | |
| 1427 { | |
| 1428 #if 0 /* ??? It is not clear yet what should replace this. */ | |
| 1429 int offset = DECL_OFFSET (parms) / BITS_PER_UNIT; | |
| 1430 /* A parm declared char is really passed as an int, | |
| 1431 so it occupies the least significant bytes. | |
| 1432 On a big-endian machine those are not the low-numbered ones. */ | |
| 1433 if (BYTES_BIG_ENDIAN | |
| 1434 && offset != -1 | |
| 1435 && TREE_TYPE (parms) != DECL_ARG_TYPE (parms)) | |
| 1436 offset += (GET_MODE_SIZE (TYPE_MODE (DECL_ARG_TYPE (parms))) | |
| 1437 - GET_MODE_SIZE (GET_MODE (DECL_RTL (parms)))); | |
| 1438 if (INTVAL (XEXP (XEXP (DECL_RTL (parms), 0), 1)) != offset) {...} | |
| 1439 #endif | |
| 1440 { | |
| 1441 if (name == 0 || *name == 0) | |
| 1442 name = gen_fake_label (); | |
| 1443 PUT_SDB_DEF (name); | |
| 1444 PUT_SDB_INT_VAL (DEBUGGER_AUTO_OFFSET | |
| 1445 (XEXP (DECL_RTL (parms), 0))); | |
| 1446 PUT_SDB_SCL (C_AUTO); | |
| 1447 PUT_SDB_TYPE (plain_type (TREE_TYPE (parms))); | |
| 1448 PUT_SDB_ENDEF; | |
| 1449 } | |
| 1450 } | |
| 1451 } | |
| 1452 } | |
| 1453 | |
| 1454 /* Output debug information for a global DECL. Called from toplev.c | |
| 1455 after compilation proper has finished. */ | |
| 1456 | |
| 1457 static void | |
| 1458 sdbout_global_decl (tree decl) | |
| 1459 { | |
| 1460 if (TREE_CODE (decl) == VAR_DECL | |
| 1461 && !DECL_EXTERNAL (decl) | |
| 1462 && DECL_RTL_SET_P (decl)) | |
| 1463 { | |
| 1464 /* The COFF linker can move initialized global vars to the end. | |
| 1465 And that can screw up the symbol ordering. Defer those for | |
| 1466 sdbout_finish (). */ | |
| 1467 if (!DECL_INITIAL (decl) || !TREE_PUBLIC (decl)) | |
| 1468 sdbout_symbol (decl, 0); | |
| 1469 else | |
|
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1470 VEC_safe_push (tree, gc, deferred_global_decls, decl); |
| 0 | 1471 |
| 1472 /* Output COFF information for non-global file-scope initialized | |
| 1473 variables. */ | |
| 1474 if (DECL_INITIAL (decl) && MEM_P (DECL_RTL (decl))) | |
| 1475 sdbout_toplevel_data (decl); | |
| 1476 } | |
| 1477 } | |
| 1478 | |
| 1479 /* Output initialized global vars at the end, in the order of | |
| 1480 definition. See comment in sdbout_global_decl. */ | |
| 1481 | |
| 1482 static void | |
| 1483 sdbout_finish (const char *main_filename ATTRIBUTE_UNUSED) | |
| 1484 { | |
| 1485 size_t i; | |
|
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1486 tree decl; |
| 0 | 1487 |
|
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1488 FOR_EACH_VEC_ELT (tree, deferred_global_decls, i, decl) |
|
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1489 sdbout_symbol (decl, 0); |
| 0 | 1490 } |
| 1491 | |
| 1492 /* Describe the beginning of an internal block within a function. | |
| 1493 Also output descriptions of variables defined in this block. | |
| 1494 | |
| 1495 N is the number of the block, by order of beginning, counting from 1, | |
| 1496 and not counting the outermost (function top-level) block. | |
| 1497 The blocks match the BLOCKs in DECL_INITIAL (current_function_decl), | |
| 1498 if the count starts at 0 for the outermost one. */ | |
| 1499 | |
| 1500 static void | |
| 1501 sdbout_begin_block (unsigned int line, unsigned int n) | |
| 1502 { | |
| 1503 tree decl = current_function_decl; | |
| 1504 MAKE_LINE_SAFE (line); | |
| 1505 | |
| 1506 /* The SCO compiler does not emit a separate block for the function level | |
| 1507 scope, so we avoid it here also. However, mips ECOFF compilers do emit | |
| 1508 a separate block, so we retain it when MIPS_DEBUGGING_INFO is defined. */ | |
| 1509 #ifndef MIPS_DEBUGGING_INFO | |
| 1510 if (n != 1) | |
| 1511 #endif | |
| 1512 PUT_SDB_BLOCK_START (line - sdb_begin_function_line); | |
| 1513 | |
| 1514 if (n == 1) | |
| 1515 { | |
| 1516 /* Include the outermost BLOCK's variables in block 1. */ | |
| 1517 do_block = BLOCK_NUMBER (DECL_INITIAL (decl)); | |
| 1518 sdbout_block (DECL_INITIAL (decl)); | |
| 1519 } | |
| 1520 /* If -g1, suppress all the internal symbols of functions | |
| 1521 except for arguments. */ | |
| 1522 if (debug_info_level != DINFO_LEVEL_TERSE) | |
| 1523 { | |
| 1524 do_block = n; | |
| 1525 sdbout_block (DECL_INITIAL (decl)); | |
| 1526 } | |
| 1527 | |
| 1528 #ifdef SDB_ALLOW_FORWARD_REFERENCES | |
| 1529 sdbout_dequeue_anonymous_types (); | |
| 1530 #endif | |
| 1531 } | |
| 1532 | |
| 1533 /* Describe the end line-number of an internal block within a function. */ | |
| 1534 | |
| 1535 static void | |
| 1536 sdbout_end_block (unsigned int line, unsigned int n ATTRIBUTE_UNUSED) | |
| 1537 { | |
| 1538 MAKE_LINE_SAFE (line); | |
| 1539 | |
| 1540 /* The SCO compiler does not emit a separate block for the function level | |
| 1541 scope, so we avoid it here also. However, mips ECOFF compilers do emit | |
| 1542 a separate block, so we retain it when MIPS_DEBUGGING_INFO is defined. */ | |
| 1543 #ifndef MIPS_DEBUGGING_INFO | |
| 1544 if (n != 1) | |
| 1545 #endif | |
| 1546 PUT_SDB_BLOCK_END (line - sdb_begin_function_line); | |
| 1547 } | |
| 1548 | |
| 1549 /* Output a line number symbol entry for source file FILENAME and line | |
| 1550 number LINE. */ | |
| 1551 | |
| 1552 static void | |
|
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1553 sdbout_source_line (unsigned int line, const char *filename ATTRIBUTE_UNUSED, |
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1554 int discriminator ATTRIBUTE_UNUSED, |
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1555 bool is_stmt ATTRIBUTE_UNUSED) |
| 0 | 1556 { |
| 1557 /* COFF relative line numbers must be positive. */ | |
| 1558 if ((int) line > sdb_begin_function_line) | |
| 1559 { | |
| 1560 #ifdef SDB_OUTPUT_SOURCE_LINE | |
| 1561 SDB_OUTPUT_SOURCE_LINE (asm_out_file, line); | |
| 1562 #else | |
| 1563 fprintf (asm_out_file, "\t.ln\t%d\n", | |
| 1564 ((sdb_begin_function_line > -1) | |
| 1565 ? line - sdb_begin_function_line : 1)); | |
| 1566 #endif | |
| 1567 } | |
| 1568 } | |
| 1569 | |
| 1570 /* Output sdb info for the current function name. | |
| 1571 Called from assemble_start_function. */ | |
| 1572 | |
| 1573 static void | |
| 1574 sdbout_begin_function (tree decl ATTRIBUTE_UNUSED) | |
| 1575 { | |
| 1576 sdbout_symbol (current_function_decl, 0); | |
| 1577 } | |
| 1578 | |
| 1579 /* Called at beginning of function body (before or after prologue, | |
| 1580 depending on MIPS_DEBUGGING_INFO). Record the function's starting | |
| 1581 line number, so we can output relative line numbers for the other | |
| 1582 lines. Describe beginning of outermost block. Also describe the | |
| 1583 parameter list. */ | |
| 1584 | |
| 1585 #ifndef MIPS_DEBUGGING_INFO | |
| 1586 static void | |
| 1587 sdbout_begin_prologue (unsigned int line, const char *file ATTRIBUTE_UNUSED) | |
| 1588 { | |
| 1589 sdbout_end_prologue (line, file); | |
| 1590 } | |
| 1591 #endif | |
| 1592 | |
| 1593 static void | |
| 1594 sdbout_end_prologue (unsigned int line, const char *file ATTRIBUTE_UNUSED) | |
| 1595 { | |
| 1596 sdb_begin_function_line = line - 1; | |
| 1597 PUT_SDB_FUNCTION_START (line); | |
| 1598 sdbout_parms (DECL_ARGUMENTS (current_function_decl)); | |
| 1599 sdbout_reg_parms (DECL_ARGUMENTS (current_function_decl)); | |
| 1600 } | |
| 1601 | |
| 1602 /* Called at end of function (before epilogue). | |
| 1603 Describe end of outermost block. */ | |
| 1604 | |
| 1605 static void | |
| 1606 sdbout_end_function (unsigned int line) | |
| 1607 { | |
| 1608 #ifdef SDB_ALLOW_FORWARD_REFERENCES | |
| 1609 sdbout_dequeue_anonymous_types (); | |
| 1610 #endif | |
| 1611 | |
| 1612 MAKE_LINE_SAFE (line); | |
| 1613 PUT_SDB_FUNCTION_END (line - sdb_begin_function_line); | |
| 1614 | |
| 1615 /* Indicate we are between functions, for line-number output. */ | |
| 1616 sdb_begin_function_line = -1; | |
| 1617 } | |
| 1618 | |
| 1619 /* Output sdb info for the absolute end of a function. | |
| 1620 Called after the epilogue is output. */ | |
| 1621 | |
| 1622 static void | |
| 1623 sdbout_end_epilogue (unsigned int line ATTRIBUTE_UNUSED, | |
| 1624 const char *file ATTRIBUTE_UNUSED) | |
| 1625 { | |
| 1626 const char *const name ATTRIBUTE_UNUSED | |
| 1627 = IDENTIFIER_POINTER (DECL_ASSEMBLER_NAME (current_function_decl)); | |
| 1628 | |
| 1629 #ifdef PUT_SDB_EPILOGUE_END | |
| 1630 PUT_SDB_EPILOGUE_END (name); | |
| 1631 #else | |
| 1632 fprintf (asm_out_file, "\t.def\t"); | |
| 1633 assemble_name (asm_out_file, name); | |
| 1634 fprintf (asm_out_file, "%s\t.val\t.%s\t.scl\t-1%s\t.endef\n", | |
| 1635 SDB_DELIM, SDB_DELIM, SDB_DELIM); | |
| 1636 #endif | |
| 1637 } | |
| 1638 | |
| 1639 /* Output sdb info for the given label. Called only if LABEL_NAME (insn) | |
| 1640 is present. */ | |
| 1641 | |
| 1642 static void | |
| 1643 sdbout_label (rtx insn) | |
| 1644 { | |
| 1645 PUT_SDB_DEF (LABEL_NAME (insn)); | |
| 1646 PUT_SDB_VAL (insn); | |
| 1647 PUT_SDB_SCL (C_LABEL); | |
| 1648 PUT_SDB_TYPE (T_NULL); | |
| 1649 PUT_SDB_ENDEF; | |
| 1650 } | |
| 1651 | |
| 1652 /* Change to reading from a new source file. */ | |
| 1653 | |
| 1654 static void | |
| 1655 sdbout_start_source_file (unsigned int line ATTRIBUTE_UNUSED, | |
| 1656 const char *filename ATTRIBUTE_UNUSED) | |
| 1657 { | |
| 1658 #ifdef MIPS_DEBUGGING_INFO | |
| 1659 struct sdb_file *n = XNEW (struct sdb_file); | |
| 1660 | |
| 1661 n->next = current_file; | |
| 1662 n->name = filename; | |
| 1663 current_file = n; | |
| 1664 output_file_directive (asm_out_file, filename); | |
| 1665 #endif | |
| 1666 } | |
| 1667 | |
| 1668 /* Revert to reading a previous source file. */ | |
| 1669 | |
| 1670 static void | |
| 1671 sdbout_end_source_file (unsigned int line ATTRIBUTE_UNUSED) | |
| 1672 { | |
| 1673 #ifdef MIPS_DEBUGGING_INFO | |
| 1674 struct sdb_file *next; | |
| 1675 | |
| 1676 next = current_file->next; | |
| 1677 free (current_file); | |
| 1678 current_file = next; | |
| 1679 output_file_directive (asm_out_file, current_file->name); | |
| 1680 #endif | |
| 1681 } | |
| 1682 | |
| 1683 /* Set up for SDB output at the start of compilation. */ | |
| 1684 | |
| 1685 static void | |
| 1686 sdbout_init (const char *input_file_name ATTRIBUTE_UNUSED) | |
| 1687 { | |
| 1688 tree t; | |
| 1689 | |
| 1690 #ifdef MIPS_DEBUGGING_INFO | |
| 1691 current_file = XNEW (struct sdb_file); | |
| 1692 current_file->next = NULL; | |
| 1693 current_file->name = input_file_name; | |
| 1694 #endif | |
| 1695 | |
|
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1696 deferred_global_decls = VEC_alloc (tree, gc, 12); |
| 0 | 1697 |
| 1698 /* Emit debug information which was queued by sdbout_symbol before | |
| 1699 we got here. */ | |
| 1700 sdbout_initialized = true; | |
| 1701 | |
| 1702 for (t = nreverse (preinit_symbols); t; t = TREE_CHAIN (t)) | |
| 1703 sdbout_symbol (TREE_VALUE (t), 0); | |
| 1704 preinit_symbols = 0; | |
| 1705 } | |
| 1706 | |
| 1707 #endif /* SDB_DEBUGGING_INFO */ | |
| 1708 | |
| 1709 #include "gt-sdbout.h" |